Top U.S. officials are warning of terrorist retaliation in the wake of Osama bin Laden’s death, but for travelers though the D.C. area’s airports and train stations, all appears to be business as usual. “Everything seemed fine to me,” said Teresa Arratia, who flew into Reagan National Airport Wednesday afternoon from Louisiana. “Security lines were normal, it was the same check-in process, there were no problems.”

Homeland Security Secretary Janet Napolitano did not issue a terrorist alert despite the warnings, and the Transportation Security Administration offered little detail of specific security changes it was making in response to the threat.